Could it be??

So for about 5 days, 8 days before my period, I was having some wierd spotting. It was super brown and pink and at times it was bright red but only a couple drops. So, about a day ago it stopped. I'm due for my period in 2 days. Now I'm just having regular light watery cm. no signs of spotting Anymore at all. Could it have been IB? Ever since it stopped I've been having the spotting I've been nauseous and I've had those stomach pains like when you have to poop really bad but i don't really have to poop.